11000120210021 has 4 divisors (see below), whose sum is σ = 11000144716812. Its totient is φ = 11000095703232.

The previous prime is 11000120210003. The next prime is 11000120210059. The reversal of 11000120210021 is 12001202100011.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1208922240100 + 9791197969921 = 1099510^2 + 3129089^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11000120210021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11000120209984 and 11000120210011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11000120210081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11567300 + ... + 12482093.

It is an arithmetic number, because the mean of its divisors is an integer number (2750036179203).

Almost surely, 2^{11000120210021} is an apocalyptic number.

It is an amenable number.

11000120210021 is a deficient number, since it is larger than the sum of its proper divisors (24506791).

11000120210021 is an equidigital number, since it uses as much as digits as its factorization.

11000120210021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24506790.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 11000120210021 its reverse (12001202100011), we get a palindrome (23001322310032).

The spelling of 11000120210021 in words is "eleven trillion, one hundred twenty million, two hundred ten thousand, twenty-one".